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190 lines
4.9 KiB
C
190 lines
4.9 KiB
C
/*
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* /src/NTP/ntp-4/libparse/clk_trimtaip.c,v 4.7 1999/11/28 09:13:51 kardel RELEASE_19991128_A
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*
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* clk_trimtaip.c,v 4.7 1999/11/28 09:13:51 kardel RELEASE_19991128_A
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*
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* Trimble SV6 clock support - several collected codepieces
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_TRIMTAIP)
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#include "ntp_fp.h"
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#include "ntp_unixtime.h"
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#include "ntp_calendar.h"
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#include "parse.h"
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#ifndef PARSESTREAM
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#include "ntp_stdlib.h"
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#include <stdio.h>
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#else
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#include "sys/parsestreams.h"
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extern void printf P((const char *, ...));
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#endif
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/* 0000000000111111111122222222223333333 / char
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* 0123456789012345678901234567890123456 \ posn
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* >RTMhhmmssdddDDMMYYYYoodnnvrrrrr;*xx< Actual
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* ----33445566600112222BB7__-_____--99- Parse
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* >RTM 1 ;* <", Check
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*/
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#define hexval(x) (('0' <= (x) && (x) <= '9') ? (x) - '0' : \
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('a' <= (x) && (x) <= 'f') ? (x) - 'a' + 10 : \
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('A' <= (x) && (x) <= 'F') ? (x) - 'A' + 10 : \
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-1)
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#define O_USEC O_WDAY
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#define O_GPSFIX O_FLAGS
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#define O_CHKSUM O_UTCHOFFSET
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static struct format trimsv6_fmt =
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{ { { 13, 2 }, {15, 2}, { 17, 4}, /* Day, Month, Year */
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{ 4, 2 }, { 6, 2}, { 8, 2}, /* Hour, Minute, Second */
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{ 10, 3 }, {23, 1}, { 0, 0}, /* uSec, FIXes (WeekDAY, FLAGS, ZONE) */
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{ 34, 2 }, { 0, 0}, { 21, 2}, /* cksum, -, utcS (UTC[HMS]OFFSET) */
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},
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(const unsigned char *)">RTM 1 ;* <",
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0
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};
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static unsigned long cvt_trimtaip P((unsigned char *, int, struct format *, clocktime_t *, void *));
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static unsigned long inp_trimtaip P((parse_t *, unsigned int, timestamp_t *));
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clockformat_t clock_trimtaip =
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{
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inp_trimtaip, /* no input handling */
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cvt_trimtaip, /* Trimble conversion */
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pps_one, /* easy PPS monitoring */
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(void *)&trimsv6_fmt, /* conversion configuration */
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"Trimble TAIP",
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37, /* string buffer */
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0 /* no private data */
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};
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static unsigned long
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cvt_trimtaip(
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unsigned char *buffer,
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int size,
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struct format *format,
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clocktime_t *clock_time,
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void *local
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)
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{
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long gpsfix;
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u_char calc_csum = 0;
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long recv_csum;
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int i;
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if (!Strok(buffer, format->fixed_string)) return CVT_NONE;
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#define OFFS(x) format->field_offsets[(x)].offset
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#define STOI(x, y) \
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Stoi(&buffer[OFFS(x)], y, \
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format->field_offsets[(x)].length)
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if ( STOI(O_DAY, &clock_time->day) ||
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STOI(O_MONTH, &clock_time->month) ||
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STOI(O_YEAR, &clock_time->year) ||
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STOI(O_HOUR, &clock_time->hour) ||
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STOI(O_MIN, &clock_time->minute) ||
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STOI(O_SEC, &clock_time->second) ||
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STOI(O_USEC, &clock_time->usecond)||
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STOI(O_GPSFIX, &gpsfix)
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) return CVT_FAIL|CVT_BADFMT;
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clock_time->usecond *= 1000;
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/* Check that the checksum is right */
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for (i=OFFS(O_CHKSUM)-1; i >= 0; i--) calc_csum ^= buffer[i];
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recv_csum = (hexval(buffer[OFFS(O_CHKSUM)]) << 4) |
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hexval(buffer[OFFS(O_CHKSUM)+1]);
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if (recv_csum < 0) return CVT_FAIL|CVT_BADTIME;
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if (((u_char) recv_csum) != calc_csum) return CVT_FAIL|CVT_BADTIME;
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clock_time->utcoffset = 0;
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/* What should flags be set to ? */
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clock_time->flags = PARSEB_UTC;
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/* if the current GPS fix is 9 (unknown), reject */
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if (0 > gpsfix || gpsfix > 9) clock_time->flags |= PARSEB_POWERUP;
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return CVT_OK;
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}
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/*
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* inp_trimtaip
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*
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* grep data from input stream
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*/
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static u_long
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inp_trimtaip(
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parse_t *parseio,
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unsigned int ch,
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timestamp_t *tstamp
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)
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{
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unsigned int rtc;
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parseprintf(DD_PARSE, ("inp_trimtaip(0x%lx, 0x%x, ...)\n", (long)parseio, ch));
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switch (ch)
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{
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case '>':
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parseprintf(DD_PARSE, ("inp_trimptaip: START seen\n"));
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parseio->parse_index = 1;
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parseio->parse_data[0] = ch;
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parseio->parse_dtime.parse_stime = *tstamp; /* collect timestamp */
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return PARSE_INP_SKIP;
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case '<':
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parseprintf(DD_PARSE, ("inp_trimtaip: END seen\n"));
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if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
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return parse_end(parseio);
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else
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return rtc;
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default:
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return parse_addchar(parseio, ch);
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}
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}
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#else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */
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int clk_trimtaip_bs;
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#endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_TRIMTAIP) */
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/*
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* History:
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*
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* clk_trimtaip.c,v
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* Revision 4.7 1999/11/28 09:13:51 kardel
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* RECON_4_0_98F
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*
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* Revision 4.6 1998/08/16 18:46:27 kardel
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* (clock_trimtaip =): changed format name
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*
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* Revision 4.5 1998/06/14 21:09:38 kardel
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* Sun acc cleanup
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*
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* Revision 4.4 1998/06/13 12:06:57 kardel
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* fix SYSV clock name clash
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*
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* Revision 4.3 1998/06/12 15:22:29 kardel
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* fix prototypes
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*
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* Revision 4.2 1998/06/12 09:13:26 kardel
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* conditional compile macros fixed
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* printf prototype
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*
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* Revision 4.1 1998/05/24 09:39:54 kardel
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* implementation of the new IO handling model
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*
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* Revision 4.0 1998/04/10 19:45:31 kardel
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* Start 4.0 release version numbering
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*
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* from V3 1.4 log info deleted 1998/04/11 kardel
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*/
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